X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fana%2Finterval_analysis.h;h=bac1a9c4bbf6c92256fa840068288c6401786ba5;hb=f274dcf35aa0d3f4748387dbddfe50e8d7d44951;hp=db4637c6217cb994998ce97db4daed34759ab69f;hpb=5ceb18e5f9c9afa7b0ac63e2bfdda2875e8bc5df;p=libfirm

diff --git a/ir/ana/interval_analysis.h b/ir/ana/interval_analysis.h
index db4637c62..bac1a9c4b 100644
--- a/ir/ana/interval_analysis.h
+++ b/ir/ana/interval_analysis.h
@@ -11,20 +11,21 @@
  */
 
 /**
-* @file interval_analysis.h
-*
-*  Decompost control flow graph into acylic, hierarchic intervals.
-*
-*  @author Goetz Lindenmaier
-*
-*  The analysis is based on the control flow looptree.  An intervall are basically
-*  all nodes in a single ir_loop entry, i.e., basic blocks and inner loop nodes.
-*  The analysis computes a new set of edges that link all nodes of a loop to an
-*  acyclic graph.
-*
-*
-*
-*/
+ * @file interval_analysis.h
+ *
+ *  Decompost control flow graph into acylic, hierarchic intervals.
+ *
+ *  @author Goetz Lindenmaier
+ *
+ *  The analysis is based on the control flow looptree.  An intervall
+ *  are basically all nodes in a single ir_loop entry, i.e., basic
+ *  blocks and inner loop nodes.  The analysis computes a new set of
+ *  edges that link all nodes of a loop to an acyclic graph.
+ *
+ *  The interval analysis counts the number of exception control flow
+ *  operations leaving a block.  This depends on stuff computed in
+ *  execution_freqencies.
+ */
 
 #ifndef _INTERVAL_ANALYSIS_H_
 #define _INTERVAL_ANALYSIS_H_
@@ -46,7 +47,12 @@ void  add_region_in   (void *region, void *in);
  *
  *  This number is useful for evaluation of execution frequencies.
  */
-int   get_region_n_outs(void *region);
+int get_region_n_outs(void *region);
+
+/** The number of exception out edges of a region.
+ *
+ *  This number is useful for evaluation of execution frequencies.
+ */
 int get_region_n_exc_outs(void *region);
 
 /** The control flow operation corresponding to the loop-region in at
@@ -55,16 +61,16 @@ int get_region_n_exc_outs(void *region);
 void *get_loop_cfop(void *region, int pos);
 
 
-
-
 /** The algorithm to construct the interval graph.
+ *
+ *  Constructs the cf loop tree and leaves a valid version of it.
  *
  *  @todo: @@@ add flag that states correctness of interval analysis information
  *  to irg.
  **/
-
 void construct_intervals(ir_graph *irg);
 
+
 /** frees interval information of all graphs. */
 void free_intervals(void);